Yarn winding device



Sept. 5, 1944. A. w. KEIGHT YARN WINDING DEVICE I 2 Sheets-Sheet 1 Alber f ww ghf Filed July 1. 1942 P 5, 1944. A. w. KEIGHT YARN WINDING DEVICE Filed July. 1, 942

2 Sheets-Sheet 2 INVII-INTOR Alberf W. Ke'ighr Patented Sept. 5, 1944 p YARN WINDING DEVICE Albert w. Keight, Cumberland, Md., assignor to Celanese Corporation of America, a

tionof Delaware Application July 1, 1942, sefiawo. 449,207

corpora- Claims. (c1., =242-4s.5)

This invention relates to a twisting and windlng apparatus for twisting and winding into pim, cop or other headless package yarns orthreads, especially those containing a derivative of cellulose or other synthetic yarn made by continuous spinning processes. v j

Headless packages have heretofore been formed by superimposing two motions on the guide'di-- recting the yarn on tov the package, namely, an up and down traversing or "chasing motion and a slow progressive feed or lift for buildingthe package, which moves up only once during the filling of the package. Such packages cannot economically be dressed because any dirt on the bottom layers of the package necessitates complete backwinding to clean up the yarn. The present invention overcomes this disadvantage by super- Fig. 4 is a cross-sectional view'taken on the line 4-4 of Fig. 3,. and

Fig. 5 is a cross-sectional view taken on the line 5-5 of Fig. 3.

Like reference numerals designatelike parts throughout the several views of the drawings.

As stated above, the invention relates to a 'meohanism or device for building a headless package, i. e, a cop or pim, said device being applica- -ble for attachmentdirectly to artificial silk spinning cabinets, aswell as other winding and packaging devices. It is applicable to buildingpackages much larger than heretofore possible, say, from 700 to 1400 or more grams. Referring particularly to Fig. 1 of the drawings, spindle assemblies I, each shown carrying a package of imposing two' motions, nam'ely,a chaser motion o similar to those of thejprio'r devices and aseparate builder motion that raises and lowers at.

any desired rate. For instance, the chaser mechanism may move up and down times a minute, and the builder mechanism reciprocate once in 5 minutes and a total of times to fill a package. As the entire package is covered with a layer of yarn every 5 minutes, with the'above timing of motions, it can be'dressed by removal of one layer, or the amount applied in 5 minutes.

Another. advantage of the present invention is the simplicity of designand relation of parts which make for economy of construction.

A still further advantage of the'present invention isthat any package on the metier or spinning machine can be doffed and restarted at any time without a resetting of any mechanical parts, thereby increasing the number of units which can be taken care of by the operator.

Other advantages and objects of the invention, together with certain details of constructionand combinations of parts, will appear from thefollowing description and fromthe drawings.

yarn 2,are arranged in a row along the front of the metier, the frame of which is generally indicated by the reference numeral 3. The package of y'arnis built by the superimposing of two motions, the motion produced by the reciprocation of the ring rail 4 and the motion produced by the reciprocating of the spindle l itself, The

In the drawings. there is shown one embodiment of my invention adapted especlallyto form headless packages at an artificial silk metier.

The invention may, however, be employed on any package produced is of the headless type having two tapered ends and a cylindrical body portion. The ring rail 4 has a throw of substantially the cylindrical portion of the package while the spindle reciprocatesabout the length of one tapered portion. This superimposing of the chaser motion andbuilde'r motionbuilds a package of layers of yarn, each layer substantially covering the preceeding layer. v

The chaser motion is providedby ring rail 4 through main drive shaft 5 in the following manner: a fast and loose belt arrangement, comprising pulleys 6 driven by main shaft 5 connected 'by'belt 6' to pulleys 1, drives a gear 8.

belts 9 whichdrive spindles I may alsobe driven The by main shaft 5. The gear 8 meshes with and drives a gear-ll mounted" on one end of a shaft l2. A worm" gear I3 is fixed to the other end of shaft H, which worm gear meshes with and rotates a gear 14 attached at one end of a shaft l5. At the other end of shaft i5 is mounted a heart-'shaped cam I6 which is adapted to act against acam follower I! mounted for free rotation on an arm i 8 (Fig, 1) pivoted at lilon a boss 20 on main frame 3. The free end of arm I I8 is adapted to receive one end of a'connect- 'ing rod 2 I.

In order to adjust the length of the throw of connecting rod 2i, the connection between arm I8 and connecting rod II is made adjustable. To this end, arm [8 1-5 provided with a slot 22 *m' which is mounted a stud shaft 23 on which connecting rod 2| is journaled. The stud shaft may be held in any desired position in slot 22 by any suitable means, such as lock nuts (not shown).

The other end oi connecting rod 2| is attached is attached one end of a flexible cable or rope 23.

The flexible cable is passed over'a grooved idler. I

pulley 29 and fixed to a lug 30 on a 'collar 3| adapted for sliding movement along a vertical bar 32. Each collar 3| has attached'thereto a reciprocating lifting arm '33 which is guided in its vertical path by brackets 3. On the upper ends of lifting arms 33 is carried the ring rail I which is provided with a ring 35 for each spindle. The rings 35 may be equipped with a traveler or fiyer in the usual manner.

The upon and down movement of the ring rail, or chaser motion, is usually relatively rapid, being on the order of from 5 to 20 strokes per minute. The length of the stroke is about equal to the length of the cylindrical section plus one tapered section of the package being produced. .As iswell understood in the art, the shape and size of the cam ll governs the speed of the traverse and the shape of the yarn package. The shape and size of this cammay be varied to produce yarn packages of different configuration.

Superimposed upon the chaser motion is a builder motion, 1. e., a slower motion imparted to the spindles-which effects a relative movement of the yarn, package being formed with respect to the ring rail 4. by mounting a sprocket wheel 38 on shaft I! which is adapted to drive a sprocket wheel 31 by means of a chain 3!. The sprocket wheel 31 is attached to and drives a shaft 33 of-a variable speed reducing unit ll on the output; or slow speed, shaft 42 of which is fixed a cam 43. This cam 43 operates against a cam follower ll journaled in the lower end of a vertical rod 45 adaptthereto, a rack 48 which meshes with and is,

adapted to rotate a pinion ll fixed to a shaft II extending horizontally across the width of thema chine.

s The shaft BI is supported at intervals in brackets 52 mounted on a cross-piece 83 of the machine frame. Pinion gears ll. are fixed to shaft II at points opposite each spindle assem-' bly. Each pinion gear is adapted to mesh with a rack 55 mounted on the bolster 58 of the spindle assembly in a manner described below.

The spindle assemblies preferably work in housings carried by cross-piece". To this end U-shaped lugs 51 are attached to and extend in a horizontal plane from cross-piece 53. A cylinder 58 is carried. by each lug, the cylinder being provided at its top with a flange 5! adapted to be seated onthe mg 51. The lower portion of the cylinder is threaded on its outersurface as shown at ii to receive internally threaded rings 62 and 63 for the purpose of securely fastening the cylinder 58 in position on the ing 51.

A slot 64 is provided in the cylinder 58 to al- This builder motion is effected low the pinion 34 to extend therein to mesh with the spindle rack 53. The inner face of the cylinder 33 is formed into, or has attached thereto, a split sleeve 65 that provides a bearing surface for an internally threaded tube ll attached to the threads on the well I! of the bolster It. The slot in sleeve 85 is wide enough to allow room for the spindle rack SI that is directly attached to the tube SI and .thus to the bolster I! of the spindle.

The spindle assembly may be of any suitable manufacture and comprises generally the well 81 for holding a supply of oil and steps or bearings for the spindle, which is formed with a whorl 68 for frictional engagement with the drive belt 9, a shoulder I for supporting the base II of a core II on which the yarn is wound and a blade I3 for aligning the said core. The core I2, in accordance with the present invention, may be a tube without flanges at the base or head, thus greatly reducing the cost of packaging yarn. The invention permits the'employment of the cheapest type of core and it can be adapted to most existing machinery. The invention permits of the use of smaller rings on the ring railv for a comparative weight of yarn per package, thus allowing and making a greater clearance for handling resulting in less yarn soilage and damaged windings due to bumping the package in dofling operations. 1 This invention eliminates traverse setting and thus a'number of defects due to bad traverses.

Since this builder motion derives its power from shaft l2, which derives its power from shafti, it is [in timed relation with the chaser motion. The two motions, however, must not be in phase but must be so adjusted that they do not synyarn by the drymethod of spinning, may be used without further processingin warp knitting, hose knitting, circularknitting and looms. The large size package built without a head eliminates coning and cheesing operations for many purposes where such steps were formerly necessary, such as in warping and warp knitting.

Another advantage of the type of package produced in accordance with this invention is that the yarnon the package dries uniformly. In the spinning of the yarn by the continuous process, some solvent remains in the yarn when wound on the package, and slight changes ocour in the drying of the yarn depending upon whether the layers are exposed or covered up.

, in drying or discharge of solvent vapors.

The invention is applicable to substantially all packaging devices that now employ a ring rail traverse or cap spinning traverse. It may therefore be employed in the production of all the artificial yarns such as those made from or containing organic derivatives of cellulose such as benzyl cellulose.

the organic acid esters of cellulose and cellulose ethers. Examples of organic acid esters of cellulose are cellulose acetate, cellulose aceto-butyrate, cellulose formate, cellulose butyrate and cellulose propionate, while examples of cellulose ethers are methyl cellulose, ethyl cellulose and It may also be employed in the production of yarns of regenerated or reconstltutedcellulose and yarns of the linear polymer of amides, polyamldes, etc., with compounds having two or more reactant groups such as halogens, carboxyl, sulphonate, etc.

It is to be understood that the foregoing detion, means including a second cam and a rack I and pinion operated thereby for reciprocating tailed description is given merely by way of illustration and that many variations may be made therein without departing from the spirit of this invention.

Having described my invention, what I desire to secure by Letters Patent is:

1. In a device for producing yarn packages of the headless type, the combination with a spindle, means for driving the spindle and a traverse ring rail, of means for reciprocating the ring rail to produce a chaser motion and means including a tube mounted on said spindle, a rack carried by said tube, a, sleeve providing a bearing surface for said tube having a slot therein, a pinion projecting through said slot and meshing with said rack and means for driving the pinion to produce a builder motion superimposed upon said chaser motion.

2. In a device for producing yarn packages of the headless type, the combination with a spindle,

means for driving said spindle and a traverse ring rail, of means including a cam and a connecting rod operated thereby for reciprocating said ring rail to produce a chaser motion, and means including a second cam and a rack and pinion operated thereby for reciprocating said spindle to produce a builder motion superimposed upon said chaser motion.

3. In a device for producing yarn packages of said spindle to produce a builder motion superimposed upon said chaser motion, and means including a speed reducing unit for operating one of said cams at a greater speed than the other of said cams.

4. In a device for producing yarn packages of the headless type, the combination with a spindle, means for driving said spindle and a traverse ring rail, of means including a cam and a connecting rod operated thereby for reciprocating said ring rail to produce a ,chaser motion, and means for reciprocating said spindle to produce a builder motion superimposed upon said chaser motion, said means comprising a rack on said spindle, a pinion adapted to cooperate with said rack to reciprocate said spindle, a shaft on which said pinion is fixed, and a rotatable cam for causing the rotation of said shaft and pinion.

5. In a device for producing yarn packages of the headless type, the combination with a spindle, means for driving said spindle and ,a traverse ring rail, of means including a cam and a connecting rod operated thereby for reciprocating said ring rail toproduce a chaser motion, means for reciprocating said spindl to produce a builder motion superimposed upon said chaser motion, said means comprising a rack on said spindle, a pinion adapted to cooperate with said rack to reciprocate said spindle, a shaft on which said pinion is fixed, and a rotatable cam for causing the rotation of said shaft and pinion, and means including a variable speed unit for operating one of said cams at a greater speed than the other of said cams.

. ALBERT W. KEIGHT. 

